Auxiliary jaws for vises



Dec. 11, 1956 w. DACHAUER AUXILIARY JAWS FOR VISES Filed Nov. 23, 1953 INVENTOR WILHELM DACHAUER ATTORNEY United States Patent AUXILIARY JAWS FOR VISES Wilhelm Dachauer, Dornbirn, Austria Application November 23, 1953, Serial No. 393,861

1 Claim. (Cl. 81-39) Auxiliary jaws which consist of a cast hollow body fastened on the original vise jaw by means of lateral screws are already known. These jaws, however, are very expensive in their production and allow only a respectively small variation in the width of the vise jaw. Also, there are auxiliary jaws having a U-shaped hoop fastened to the body of the jaw; this hoop is tightened against the vise jaw by means of a screw at the transverse section of the hoop. This form also proved unsatisfactory because, in use, the screw often loosened which caused the auxiliary jaw to slide away from the vise jaw.

The object of this invention is to avoid the abovementioned drawbacks and to create an auxiliary jaw which can be used [for conventional vise jaws of very different widths and which allows a reliable and quick fixing as well as cheap production. This invention achieves its object by fastening a threaded stud on one of the lateral faces of the auxiliary jaws body, by loosely mounting a clamp member on the threaded stud, and by threading a nut onto the threaded stud for exerting pressure on the clamp member. On the opposite lateral face of the body of the auxiliary jaw there is a plate which co-operates with the clamp member. A further characteristic of the invention is that the work-engaging face of the body of the auxiliary jaw has a horizontally extending V-shaped channel intersected by several vertically extending trapezoidally shaped and V-shaped channels. Thus, a reliable mounting of different diameter workpieces in either a horizontal or a vertical direction is possible. Also, the vertical channels allow a firm mounting of even narrow flat workpieces.

In the drawings, Fig. 1 shows a side elevation of the auxiliary jaw, a conventional vise jaw being shown in broken lines; and Fig. 2 shows a plan of Fig. 1.

A body 3 of an auxiliary jaw has a recess in its back to receive a jaw 2 of a conventional vise 1. Fastened at a lateral face, inside of the body of the auxiliary jaw, is a threaded stud 7 on which a clamp member 5 is movably guided. Pressure is exerted on the clamp member 5 by threading a nut 6 onto the threaded stud 7. An opposite lateral face of the body 3 of the auxiliary jaw is furnished with a plate 4 which co-operates with the clamp member 5 to mount the auxiliary jaw on the vise jaw 2 A work-engaging face of the body 3 of the auxiliary jaw is provided with a horizontally extending V-shaped channel 14 and a right-angled channel 15 having one leg parallel to the upper surface of the body 3. The workengaging face is also provided with vertically extending trapezoidally shaped channels 10, 11, and 13, which form projecting parts 8, 9 and 12, and all of which co-operate with an opposite auxiliary jaw. The opposite auxiliary jaw, which has mainly the same shape as the one shown in the drawing, may be mounted so that its vertical channels confront either the projecting parts 8, 9 and 12, or the channels 10, 11 and 13.

I claim:

An auxiliary jaw for a conventional vise jaw, said auxiliary jaw comprising a body having a plate integrally secured to an end thereof for engaging a corresponding end of such a vise jaw, a threaded stud extending into and secured at the other end of said auxiliary jaw body, a clamp member movably guided on said threaded stud for engaging an opposite side of such a vise jaw, and a nut on said threaded stud for exerting pressure on said clamp member whereby said auxiliary jaw body may be rigidly fastened to a conventional vise jaw.

References Cited in the file of this patent UNITED STATES PATENTS 455,651 Bingham July 7, 1891 1,161,593 Bever Nov. 23, 1915 1,630,993 West May 31, 1927 2,490,843 Sordi Dec. 13, 1949 FOREIGN PATENTS 18,526 Great Britain Oct. 27, 1891 

